diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_10_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_10_onos.json
new file mode 100644
index 0000000..0d02792
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_10_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffffff03",
+    "type": "roadm",
+    "online": true,
+    "master": "192.168.56.101",
+    "labels": [
+      "opt-3",
+      "0000ffffffffff03"
+    ],
+    "metaUi": {
+      "x": 282,
+      "y": 603
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_11_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_11_onos.json
new file mode 100644
index 0000000..f18aa92
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_11_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffff0009",
+    "type": "switch",
+    "online": false,
+    "master": "onos-2",
+    "labels": [
+      "sw-9",
+      "0000ffffffff0009"
+    ],
+    "metaUi": {
+      "x": 884,
+      "y": 477
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_12_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_12_onos.json
new file mode 100644
index 0000000..77fe846
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_12_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffffff09",
+    "type": "roadm",
+    "online": false,
+    "master": "onos-2",
+    "labels": [
+      "opt-9",
+      "0000ffffffffff09"
+    ],
+    "metaUi": {
+      "x": 884,
+      "y": 577
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_1_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_1_onos.json
new file mode 100644
index 0000000..06d8680
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_1_onos.json
@@ -0,0 +1,11 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "192.168.56.101",
+    "online": true,
+    "labels": [
+      "192.168.56.101",
+      "127.0.0.1"
+    ]
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_2_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_2_onos.json
new file mode 100644
index 0000000..644fd55
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_2_onos.json
@@ -0,0 +1,12 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "onos-2",
+    "uiAttached": true,
+    "online": false,
+    "labels": [
+      "onos-2",
+      "127.0.0.1"
+    ]
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_3_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_3_onos.json
new file mode 100644
index 0000000..4e24bbd6
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_3_onos.json
@@ -0,0 +1,11 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "onos-leader",
+    "online": false,
+    "labels": [
+      "onos-leader",
+      "127.0.0.1"
+    ]
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_4_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_4_onos.json
new file mode 100644
index 0000000..d7768e2
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_4_onos.json
@@ -0,0 +1,11 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "onos-master",
+    "online": false,
+    "labels": [
+      "onos-master",
+      "127.0.0.1"
+    ]
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_5_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_5_onos.json
new file mode 100644
index 0000000..e74ba19
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_5_onos.json
@@ -0,0 +1,11 @@
+{
+  "event": "addInstance",
+  "payload": {
+    "id": "onos-slave",
+    "online": false,
+    "labels": [
+      "onos-slave",
+      "127.0.0.1"
+    ]
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_6_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_6_onos.json
new file mode 100644
index 0000000..259f8fa
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_6_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffff0008",
+    "type": "switch",
+    "online": true,
+    "master": "onos-2",
+    "labels": [
+      "sw-8",
+      "0000ffffffff0008"
+    ],
+    "metaUi": {
+      "x": 734,
+      "y": 477
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json
new file mode 100644
index 0000000..6cce0cf
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_7_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffff0003",
+    "type": "switch",
+    "online": true,
+    "master": "192.168.56.101",
+    "labels": [
+      "sw-3",
+      "0000ffffffff0003"
+    ],
+    "metaUi": {
+      "x": 282,
+      "y": 503
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_8_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_8_onos.json
new file mode 100644
index 0000000..898b0f4
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_8_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffff0007",
+    "type": "switch",
+    "online": true,
+    "master": "192.168.56.101",
+    "labels": [
+      "sw-7",
+      "0000ffffffff0007"
+    ],
+    "metaUi": {
+      "x": 530,
+      "y": 330
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/ev_9_onos.json b/web/gui/src/main/webapp/json/ev/colors/ev_9_onos.json
new file mode 100644
index 0000000..4e8b488
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/ev_9_onos.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffffff08",
+    "type": "roadm",
+    "online": true,
+    "master": "onos-2",
+    "labels": [
+      "opt-8",
+      "0000ffffffffff08"
+    ],
+    "metaUi": {
+      "x": 734,
+      "y": 577
+    }
+  }
+}
diff --git a/web/gui/src/main/webapp/json/ev/colors/scenario.json b/web/gui/src/main/webapp/json/ev/colors/scenario.json
new file mode 100644
index 0000000..c978bb3
--- /dev/null
+++ b/web/gui/src/main/webapp/json/ev/colors/scenario.json
@@ -0,0 +1,12 @@
+{
+  "comments": [
+    "Tweaking Colors"
+  ],
+  "title": "Color-Tweaking Scenario",
+  "params": {
+    "lastAuto": 12
+  },
+  "description": [
+    "Press 'S' to load initial events."
+  ]
+}